About cyproheptadine
First-generation antihistamine
Used for
- Allergy symptoms, such as itching, hives, and runny nose
- Sometimes used to stimulate appetite; this use may be off-label
Usual adult dose
Allergies: 4 mg three times daily; usual maximum 32 mg daily.
Usual dose in children
Age 2–6 years: 2 mg two or three times daily. Age 7–14 years: 4 mg two or three times daily; maximum 16 mg daily.
Common side effects
- Drowsiness
- Dry mouth
- Dizziness
- Increased appetite and weight gain
Important warnings
- Can impair alertness; avoid driving if drowsy.
- Avoid in children under 2 years and in people taking MAO inhibitors.
- Use cautiously with glaucoma, urinary retention, or breathing problems.
- Overdose can be dangerous, especially in children.
Pregnancy
Use only when clearly needed; pregnancy safety information is limited.
Breastfeeding
May reduce milk supply and cause infant drowsiness; avoid unless advised by a clinician.
Interactions
- Alcohol, opioids, sedatives, and sleep medicines can increase drowsiness.
- MAO inhibitors can intensify or prolong its effects.
- Other medicines with anticholinergic effects can increase dry mouth, constipation, or urinary retention.
AI-generated from general medical knowledge, not from this product's official leaflet. It may be incomplete or out of date. Not medical advice — ask a pharmacist or doctor before making any decision.